电工电气杂志社

环网型柔性多状态开关混成切换控制策略

来源：电工电气发布时间：2022-08-29 14:29 浏览次数：327

环网型柔性多状态开关混成切换控制策略

苏乾坤¹，粟时平¹，倪亮¹，欧阳琦²，罗军杰¹，李志轩¹

(1 长沙理工大学电气与信息工程学院，湖南长沙 410114；

2 国网江西省电力有限公司吉安县供电分公司，江西吉安 343000)

摘要：传统放射型柔性多状态开关 (SOP) 直流母线一旦故障会导致整个装置失效。提出了环网型 SOP 的接入方式，来解决直流侧故障问题，还能在控制各端口间功率传输的同时，实现无功补偿、谐波抑制和三相不平衡抑制等电能质量调节作用。对环网型三端口 SOP 数学模型和控制方式进行了分析，设计了各端口在不同控制模式下的控制器，并用混成切换控制理论设计了环网型三端口 SOP 的控制策略，使其能很好地实现故障恢复以及电能质量调节作用。在 MATLAB/Simulink 中搭建仿真模型，仿真结果验证了所提方案的有效性和可行性。

关键词： 柔性多状态开关；柔性互联；潮流调控；环网型；混成切换控制

中图分类号：TM564 ；TM727 文献标识码：A 文章编号：1007-3175(2022)08-0008-09

Hybrid Switching Control Strategy of Ring Network

Type Flexible Multi-State Switch

SU Qian-kun¹, SU Shi-png¹, NI Liang¹, OUYANG Qi², LUO Jun-jie¹, LI Zhi-xuan¹

（1 School of Electrical & Information Engineering, Changsha University of Science & Technology, Changsha 410114, China;

2 Ji’an Power Supply Branch, State Grid Jiangxi Electric Power Co., Ltd, Ji’an 343000, China）

Abstract: The entire device will fail if the traditional radial SOP DC bus fails. This paper proposed a way of access of ring network type SOP to solve the problem of DC fault. It could control the power transmission between ports and play a role in power quality regulation, such as achieving reactive power compensation, harmonic suppression, three-phase imbalance suppression. This research analyzed the mathematical model and control mode of ring network three-port type SOP and designed the controller of each port in different control modes. Moreover,it created the control strategy of ring network three-port type SOP by using the theory of hybrid switching control and helped achieve better fault recovery and power quality regulation. A simulation model was constructed in MATLAB/Simulink, and the simulation results verified the effectiveness and feasibility of the proposed solution.

Key words: flexible multi-state switch; flexible interconnection; trend control; ring network type; hybrid switching control

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环网型柔性多状态开关混成切换控制策略